Image from the Biodiversity Heritage Library.
Contributed by Smithsonian Institution Archives.
| www.biodiversitylibrary.org
Transcription
"solitary" their occurrence as widely isolated specimens
as contrasted with the abundantly O
gregious modes of occurrence usual in gneissatics.
These slates are cut by a couple of gabbro-
dikes, 1073 and 1074. The former is
a 15 foot vertical dike, N. 33-35° E., and
is separated only by a couple of yards from
1074. A third is also vertical, only 10ft.
south, N 38° E., N 30° E. 1073 is much
jointed and curiously enough the joints are
parallel to the dike's trend N. 53° E.
will a few joints of Dikes 1074 also
abundant sometimes clearly crossed joints
in the 1073 at first sight East
the same direction as the cleavage plane
but a more detailed trace of readings show
a uniform direction of the slaty cleavage
(in. the immediate vicinity) to be N. 42-45°
East.
These two dikes near the
edge of the exposures of slate; type
near the slaty cleavage is uniform N.
42-45° E., but a couple of hundred
yards northwest near the Pata creek in
Eastern C. 12. the direction of the clear-
age in the slates is N. only 32° E.
It is a ridiculous fact that the
shales or slates are tabulated for several yards
each side of the gabbro indicating either
that the gabbros was a better network host
than the rhyolite dikes or that the stability
was as the time for folding the surfaces.
The slaty cleavage is not better developed in
close proximity to the gabbro dikes; in fact
it is only barely discernible within a couple
of yards of the gabbro dikes where the
both are now metamorphosed laked were
in less solidly.
There are also buff and cream colored
thick slices of rhyolite porphyry with
flow structure well developed parallel to the
dikes. Dike dikes weather a ye General
color specimens collected by C. S. B.
On the west side of dike rock near
more exposures of dark blue to nearly black
slates which are slightly inclined and which
exhibit better slaty cleavage than from
the rock south of Wardswards Point. In places
these dark slates have been ribboned
and are yet thickly void the fingers when
banded resembling cork. They contain no
poroids - they are associated with massive
bodies of gabbro which, in places exhibit
well developed vertical selvetics. I saw all
along the same southwest of Lead Rock in
"Lubec rock" on map). A specimen of the
slaty gabbro is 1079 and of the
sheared dark slate 1080. Both seen
in B. 41/7.
Tuesday, July 2, 1907.
EASTPORT QUAD.
C. L. BREGER
On Lubec Road near
more more exposures of
slaty shales variety
beds of a dark Blue
with slaty shales beds
are slightly sheared with the
structure apparently parallel to bedding.
The beds are largely inclined & contorted
by the gabbro injections of which a
specimen was collected = 1081
North Lubec. S. of Perry Wharf. Tumulous
gabro = 1082. The various gabros occurs as a
stock of large size at and near the Perry
landing both north & south of the bluff.
The gabbros are strongly Gneissoids
& in a few places amygdoloidal, only
very massive.
7-the southern third of 6.343 is
composed of a massive gneiss with small
white felspars scattered the
surface now as "...".